CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER J—ELECTRICAL ENGINEERING (parts 110 to 113) > PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS > SUBPART 111.25—Motors (§111.25-1 to §111.25-15) > 111.25-15—Duty cycle.

111.25-15—Duty cycle.

Each motor must be rated for continuous duty, except a motor for an application listed in Table 111.25-15 or a similar duty must meet the minimum short-time rating stated in the table.
Table 111.25-15
Application of motor Minimum short-time rating of motor, in hours
Deck winch and direct acting capstan Half.
Deck winch with hydraulic transmission Continuous at no load followed by 1/2 hr. at full load.
Direct acting windlass One fourth.
Windlass with hydraulic transmission Half hour idle pump operation, followed by 1/4 hr. full load operation.
Steering gear, direct acting One.
Steering gear, indirect drive Continuous operation at 15 pct. load followed by 1 hr. at full load.
Watertight door operators 1/12.
Boat winches 1/12.